Home / 28,903.20-39,886.26-15,655.20

Finding the Fourth Proportional to 28,903.20, 39,886.26 and 15,655.20

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Solution

The fourth proportional to 28,903.20, 39,886.26 and 15,655.20 is: 21,604.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.20 : 39,886.26 = 15,655.20 : x
  2. Step 2: Convert to fraction form
    28,903.20/39,886.26 = 15,655.20/x
  3. Step 3: Cross multiply
    28,903.20x = 39,886.26 × 15,655.20
  4. Step 4: Simplify right side
    28,903.20x = 624,427,377.55
  5. Step 5: Solve for x
    x = 624,427,377.55/28,903.20
  6. Step 6: Final answer
    x = 21,604.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.